A DevOps Engineer Notices That All Amazon EC2 Instances Running

question 299

Multiple Choice

A DevOps engineer notices that all Amazon EC2 instances running behind an Application Load Balancer in an Auto Scaling group are failing to respond to user requests. The EC2 instances are also failing target group HTTP health checks. Upon inspection, the engineer notices the application process was not running in any EC2 instances. There are a significant number of out of memory messages in the system logs. The engineer needs to improve the resilience of the application to cope with a potential application memory leak. Monitoring and notifications should be enabled to alert when there is an issue. Which combination of actions will meet these requirements? (Choose two.)

• A) Change the Auto Scaling configuration to replace the instances when they fail the load balancer's health checks.
• B) Change the target group health check HealthCheckIntervalSeconds parameter to reduce the interval between health checks.
• C) Change the target group health checks from HTTP to TCP to check if the port where the application is listening is reachable.
• D) Enable the available memory consumption metric within the Amazon CloudWatch dashboard for the entire Auto Scaling group. Create an alarm when the memory utilization is high. Associate an Amazon SNS topic to the alarm to receive notifications when the alarm goes off.
• E) Use the Amazon CloudWatch agent to collect the memory utilization of the EC2 instances in the Auto Scaling group. Create an alarm when the memory utilization is high and associate an Amazon SNS topic to receive a notification.

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Definitions:

Target Price

Target price is the anticipated selling price of a product or service, set by a company, that reflects its market position and is intended to attract its identified target market.

Allowable Cost

This refers to the maximum cost that can be incurred on a project while still achieving the desired level of profit or meeting budget constraints.

Upstream Costs

Expenses incurred in the early stages of a product's life cycle, such as exploration and development costs in the oil and gas industry.

Downstream Costs

Costs incurred after the production process, including distribution, marketing, and customer service expenses.